dubbo学习--hello world(一)

代码结构

（1）interface 就是一个简单的 sayHello 接口定义

服务提供者有一个 DemoService 的具体实现，已经启动的 main 函数

代码如下：

import com.alibaba.dubbo.rpc.RpcContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.study.provider.DemoService;

public class DemoServiceImpl implements DemoService {

    private static final Logger logger = LoggerFactory.getLogger(DemoServiceImpl.class);

    @Override
    public String sayHello(String name) {
        logger.info("Hello " + name + ", request from consumer: " + RpcContext.getContext().getRemoteAddress());
        return "Hello 1111111111" + name + ", response from provider: " + RpcContext.getContext().getLocalAddress();
    }

}

ProviderApplication 代码如下：

public class ProviderApplication {
    /**
     * In order to make sure multicast registry works, need to specify '-Djava.net.preferIPv4Stack=true' before
     * launch the application
     */
    public static void main(String[] args) throws Exception {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring/dubbo-provider.xml");
        context.start();
        System.in.read();
    }
}

dubbo-provider.xml 配置文件内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
       http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <!-- provider's application name, used for tracing dependency relationship -->
    <dubbo:application name="demo-provider1" owner="programmer" organization="dubbox"/>

    <!--<dubbo:registry address="multicast://10.128.208.140:1234" />-->
    <dubbo:registry address="zookeeper://10.128.208.140:2181" />

    <!-- use dubbo protocol to export service on port 20880 -->
    <dubbo:protocol name="dubbo" port="20880"/>

    <!-- service implementation, as same as regular local bean -->
    <bean id="demoService" class="org.apache.dubbo.demo.provider.DemoServiceImpl"/>

    <!-- declare the service interface to be exported -->
    <dubbo:service interface="com.study.provider.DemoService" ref="demoService"/>

    <dubbo:monitor protocol="registry"></dubbo:monitor>

</beans>

consumer 代码如下

consumer.xml 内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
       http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

    <dubbo:application name="demotest-consumer" owner="programmer" organization="dubbox"/>

    <dubbo:monitor protocol="registry"></dubbo:monitor>
    <!--向 zookeeper 订阅 provider 的地址，由 zookeeper 定时推送-->
    <dubbo:registry address="zookeeper://10.128.208.140:2181"/>
    <!--使用 dubbo 协议调用定义好的 api.PermissionService 接口-->
    <dubbo:reference id="demoService" interface="com.study.provider.DemoService"/>

</beans>

首先启动 provide 再启动 consumer，前提是，安装好 zookeeper

dubbo学习--hello world(一)

猜你喜欢